The lens is made of acrylic resin, and the surface hardness of the lens reaches 5H, which is more wear-resistant and durable. Interchangeable lens design: 3 interchangeable lenses, 4x, clear vision.
Lightweight & Comfortable: Ergonomically designed frame allows you to wear for long hours without feeling fati. The expandable head strap prevents glasses from falling off and fits all head sizes.
Rechargeable Head Magnifying Glasses with 2 LEDs & 4 Detachable Lenses
Dilzekui Headband Magnifying Glass with Light, Rechargeable Head Magnifying Glasses 1X to 14X, Magnifying Headset with 6 Detachable Lens, Hands Free Head Mount Magnifier for Close Work Reading Crafts - Yahoo Shopping
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OBOVO Head Magnifier Glasses with 2 LED Lights, USB Charging Handsfree Magnifying Eyeglasses for Reading Craft Watch Repair Hobby, Detachable Lenses 1.5X, 2.5X, 3.5X,5X White
ULTRA LIGHTWEIGHT -Ultra lightweight, scratch resistant hardened binoculars, with a long service life LENS BOARDS -5 interchangeable lens boards with
9892B2C Charging Head-Mounted Magnifier Headband Magnifying Glass 5 Interchangeable Lens Boards2 LED Lights